地ち球きゅう外がい生せい命めい体たい

ち

きゅ

う

が

い

せ

い

め

い

た

い

Meanings

noun

extraterrestrial life form

A formal or scientific term for any living organism originating outside Earth. Often used in contexts like astrobiology, science fiction, or speculative discussions about alien life.

科か学がく者しゃたちは地ち球きゅう外がい生せい命めい体たいの存そん在ざいを真しん剣けんに探さがしている。
Scientists are seriously searching for the existence of extraterrestrial life forms.
そのSF映えい画がには様さま々ざまな地ち球きゅう外がい生せい命めい体たいが登とう場じょうする。
Various extraterrestrial life forms appear in that sci-fi movie.

See all 6 example sentences ›

Kanji

地ground, earth
球ball, sphere
外outside
生life, genuine, birth
命fate, command, decree
体body, substance, object

Related words

宇う宙ちゅう人じん
宇宙人 is a more common, casual term for 'alien' or 'space person', often implying intelligent beings, while 地球外生命体 is a formal, scientific term that can include any life form, not necessarily intelligent.
異い星せい人じん
異星人 also means 'alien' or 'being from another planet', similar to 宇宙人 but slightly more literary. 地球外生命体 is broader and more technical.

Built from

地ち球きゅう外がい+生せい命めい体たい

Etymology

Compound of 地球外 (extraterrestrial) + 生命体 (life form). The exact historical derivation is uncertain, but the term follows standard scientific word formation patterns in Japanese.